There is a random black dome in my overhead lights between the front and back seat that looks like a surveillance camera. When I pulled my overhead lights out, I saw a large motherboard with a small array of what look like IR sensors that fit inside the black dome. Does anyone know what this is and what its purpose is?

There is a random black dome in my overhead lights between the front and back seat that looks like a surveillance camera. When I pulled my overhead lights out, I saw a large motherboard with a small array of what look like IR sensors that fit inside the black dome. Does anyone know what this is and what its purpose is?